题目内容
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Consider incompressible flow in the entrance of a circular tube, as in Fig. 6－39. The inlet flow is
Consider incompressible flow in the entrance of a circular tube, as in Fig. 6-39. The inlet flow is uniform, u1=Uo. The flow at section 2 is developed pipe flow. Find the wall drag force F as a function of (p1, p2, ρ, Uo, R) if the flow at section 2 is:
(1)Laminar：
(2)Turbulent：
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